土壤温度和水分含量对三峡库区马尾松林凋落物叶分解的影响

林业科学 ›› 2013, Vol. 49 ›› Issue (9): 153-157.

土壤温度和水分含量对三峡库区马尾松林凋落物叶分解的影响

葛晓改^1,2, 曾立雄¹, 黄志霖¹, 肖文发¹, 谭本旺³, 周本智²

1. 中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境重点实验室北京 100091;
2. 中国林业科学研究院亚热带林业研究所富阳 311400;
3. 湖北省秭归县林业局姊归 443631

收稿日期:2012-07-09 修回日期:2013-07-11 出版日期:2013-09-25 发布日期:2013-09-19
通讯作者: 肖文发
基金资助:
林业公益性行业科研专项(201104008);"十二五"国家科技支撑计划项目(2011BAD38B04)。

Effects of Soil Temperature and Soil Water Content to Needle Litter Leaf Decomposition of Pinus massoniana Plantations in Three Gorges Reservoir Area

Ge Xiaogai^1,2, Zeng Lixiong¹, Huang Zhilin¹, Xiao Wenfa¹, Tan Benwang³, Zhou Benzhi²

1. Key Laboratory of Forest Ecology and Environment of State Forestry Administration Research Institute of Forest Ecology, Environment and Protection, CAF Beijing 100091;
2. Research Institute of Subtropical Forestry, CAF Fuyang 311400;
3. Forestry Bureau of Zigui County of Hubei Province Zigui 443631

Received:2012-07-09 Revised:2013-07-11 Online:2013-09-25 Published:2013-09-19

摘要/Abstract

摘要：

采用凋落物袋法研究土壤温度和水分含量对不同立地条件下马尾松林凋落物叶分解的影响。结果表明:分解540天后,20,30和46年生林分凋落物叶干质量剩余率分别为63.57%,59.80%和65.50%,30年生林分与20,46年生林分差异显著;凋落物叶分解速率与土壤温度呈极显著二次函数关系(P<0.01),与土壤水分含量呈线性关系但相关性不显著(P>0.05),凋落物叶分解速率与土壤水分含量/土壤温度比值呈极显著三次函数关系(P<0.01);20,30和46年生林分土壤水分含量/土壤温度比值分别为0.91~14.99,0.49~4.57和0.63~11.25,且马尾松林土壤水分含量/土壤温度比值为0~4.0时凋落物叶分解相对较快,4.0~12.0时分解相对较慢。

关键词: 凋落物叶分解, 土壤温度, 土壤水分含量, 基质质量, 三峡库区

Abstract:

Influences of the soil temperature and water content on the needle litter decomposition were quantified with different site conditions in Pinus massoniana plantations in Three Gorges Reservoir Area by using litter bags method. The results showed that litter needle mass remaining rate was 63.57%, 59.80%, and65.50% after 540 d exposition in 20-, 30-,and 46-year-old forest, respectively, and the litter decomposition rate in 30-year-old stand was significantly greater than that in the other two forests. There was a significant quadratic relationship between needle litter decomposition rate and soil temperature (P <0.01), but no significant linear relationship was found between the decomposition and soil mossture content (P >0.05). Furthermore, needle litter decomposition rate was significantly in a cubic function correlated with the ratio of soil moisture content to soil temperature (P <0.01). The ratio of soil water content to soil temperature was 0.91-14.99, 0.49-4.57, and 0.63-11.25 in 20-, 30-, and 46-year-olf forest, respectively. When the ratio was in a range of 0-4.0 the litters decomposed relatively fast, and with the ratio of 4.0-12.0 the decomposition was relatively slow. The initial substrate quality, including N content, C/N ratio, and C/P ratio, of the needle litter was significantly different in the three stands. The needle litter carbon content was higher in 20-and 46-year-old forest than in 30-year-old forest after 540 d exposition. Compared with 30-year-old stand, litter carbon release dynamic in 20-, 46-year-old stands had significantly higher temperature sensitivity. These results indicated that the indirect effect of soil temperature to needle litter decomposition rate was controlled by carbon release rate instead of the initial carbon content. Litters with fast carbon release, accompanied with fast needle litter decomposition, has lower temperature sensitivity, and vice versa.

Key words: needle litter decomposition, soil temperature, soil water content, substrate quality, Three Gorges Reservoir Area

中图分类号:

S718.5

葛晓改, 曾立雄, 黄志霖, 肖文发, 谭本旺, 周本智. 土壤温度和水分含量对三峡库区马尾松林凋落物叶分解的影响[J]. 林业科学, 2013, 49(9): 153-157.

Ge Xiaogai, Zeng Lixiong, Huang Zhilin, Xiao Wenfa, Tan Benwang, Zhou Benzhi. Effects of Soil Temperature and Soil Water Content to Needle Litter Leaf Decomposition of Pinus massoniana Plantations in Three Gorges Reservoir Area[J]. Scientia Silvae Sinicae, 2013, 49(9): 153-157.

参考文献

陈鲜艳, 张强, 叶殿秀, 等. 2009. 三峡库区局地气候变化. 长江流域资源与环境, 18(1): 47-51.

程瑞梅, 肖文发. 2008. 三峡库区森林植物群落数量分类与排序. 林业科学, 44(4): 20-27.

葛晓改, 肖文发, 曾立雄, 等. 2012. 不同林龄马尾松凋落物基质质量与土壤养分的关系. 生态学报, 32(3): 852-862.

李雪峰, 韩士杰, 张岩. 2007. 降水量变化对蒙古栎落叶分解过程的间接影响. 应用生态学报, 18(2): 261-266.

李志安, 邹碧, 丁永祯, 等. 2004. 森林凋落物分解重要影响因子及其研究进展. 生态学杂志, 23(6): 77-83.

王鹏程, 姚婧, 肖文发, 等. 2009. 三峡库区森林植被分布的地形分异特征. 长江流域资源与环境, 18(6): 528-534.

汪思龙, 陈楚莹. 2010. 森林残落物生态学. 北京: 科学出版社.

肖文发, 李建文, 于长青, 等. 2000. 长江三峡库区陆生动植物生态. 重庆: 西南师范大学出版社.

徐小锋, 田汉勤, 万师强. 2007. 气候变暖对陆地生态系统碳循环的影响. 植物生态学报, 31(2): 175-188.

杨会侠, 汪思龙, 范冰, 等. 2010. 不同林龄马尾松人工林年凋落物量与养分归还动态. 生态学杂志, 29(12): 2334-2340.

Austin A T, Vitousek P M. 2000. Precipitation, decomposition and litter decomposability of Metrosideros polymorpha in native forests on Hawai's. Journal of Ecology, 88(1): 129-138.

Austin A T, Vitousek P M. 1998. Nutrient dynamics on a precipitation gradient in Hawai'i. Oecologia, 113(4): 519-529.

Bokhorst S, Bjerke J W, Melillo J, et al. 2010. Impacts of extreme winter warming events on litter decomposition in a sub-Arctic heathland. Soil Biology and Biochemistry, 42(4): 611-617.

Boyero L, Pearson R G, Gessner M O, et al. 2011. A global experiment suggests climate warming will not accelerate litter decomposition in streams but might reduce carbon sequestration. Ecology letter, 14(3): 289-294.

Cortez J. 1998. Field decomposition of leaf litters: relationship between decomposition rates and soil moisture, soil temperature and earthworm activity. Soil Biology and Biochemistry, 30(6): 783-793.

Fierer N, Craine J M, Mclauchlan K, et al. 2005. Litter quality and the temperature sensitivity of decomposition. Ecology, 86(2): 320-326.

Hobbie S E, Vrrousek P M. 2000. Nutrient limitation of decomposition in Hawaiian forests. Ecology, 81(7): 1867-1877.

Liao J H, Wang H H, Tsai C C, et al. 2006. Litter production, decomposition and nutrient return of uplifted coral reef tropical forest. Forest Ecology and Management, 235(1-3): 174-185.

McClaugherty C A, Pastor J, Aber J D, et al. 1985. Forest litter decomposition in relation to soil nitrogen dynamics and litter quality. Ecology, 66(1): 266-275.

Moore T R, Trofymow J A, Taylor B, et al. 1999. Litter decomposition rates in Canadian forests. Global Change Biology, 5(1): 75-82.

Olson J S. 1963. Energy storage and the balance of producers and decomposers in ecological systems. Ecology, 44(2): 322-331.

Raich J W, Nadelhoffer K J. 1989. Belowground carbon allocation in forest ecosystems: global trends. Ecology, 70(5): 1346-1354.

Raich J W, Russell A E, Bedoya-Arrieta R. 2007. Lignin and enhanced litter turnover in tree plantations of lowland Costa Rica. Forest Ecology and Management, 239(1-3): 128-135.

Swift M J, Heal O W, Anderson J M. 1979. Decomposition in terrestrial ecosystems. Berkeley: University of California Press.

Trofymow J A, Moore T R, Titus B, et al. 2002. Rates of litter decomposition over 6 years in Canadian forests: influence of litter quality and climate. Canada Journal Forestry Researches, 32(5): 789-804.

Vitousek P M. 1984. Litterfall, nutrient cycling, and nutrient limitation in tropical forests. Ecology, 65(1): 285-298.

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